LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Detection of trace elements in liquids by laser-induced breakdown spectroscopy with a Meinhard nebulizer Akshaya Kumar, Fang Y. Yueh, Tracy Miller, Jagdish P. Singh Liquids Not Known HR460
Laser: Nd:YAG
Gate Delay: 1.000us
Gate Width: 10.000us
A Meinhard nebulizer is used to make a fine mist which is then analysed using LIBS. This has the advantage of very small amounts (~20ml) can be readily analysed, rather than the greater volumes required for most liquid jet applications [although probably still more than is required for static liquids or filter papers!]. Maximum signal occured for gas flow rate of 300ml/min and a liquid flow rate of 3ml/min.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Mg 0.1700 (Stated) 279.5520 280.27nm, 285.2nm Univariate Calibration -10.0000--10.0000 Calibration curves showed several different regions [1-5ppm, 8-10ppm, 10-35ppm] with distinctly different slopes. Greater sensitivity in the low concentrations was achieved using the Mg II 279.552 or 280.27nm peaks.
Mn 0.6000 (Stated) 403.0000 N/A Univariate Calibration -10.0000--10.0000 Peak intensities without correction were used for calibration
Cr 0.1600 (Stated) -10.0000 359 Univariate Calibration -10.0000--10.0000 Peak Intensities used without correction

Element RMSE (ppm) Wavelength (nm) Calibration Method Notes